My jcb pressure washer will not give the full pressure the motor sounds fine

You need to Google electronic parts suppliers and then call them with the specs of the part, they can supply it.

not really. It sounds like either a motor or unloader problem I work on washers full time and in my honest opinion these electric washers and a ripoff. You cant work on them as they dont even use industry standard parts. I would invest in a gas engine washer for small homeowner needs. If you must use an electric one, stay away from the ones at Walmart/homedepot etc. check out pressurepro com They can give you better options. Good luck

It isnt very clear your explanation of the problem but what type washer do you have first? It sounds like you have a bad unloader or need a new variable nozzle tip. Can you explain in more clear detail. Thanks

sounds like you have a stuck pressure release valve inside the pump

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Hi,

• first check the motor power supply whether it is fine or not
• next check the motor coil whether it is working or not
• If both are ok the motor power supply and coil is fine means you are suppose to check the pressure starter since it is giving the signal to the wash motor to run
• kindly change the pressure starter to solve your problem
  

This may not be a motor problem. It sounds like your pump is not working properly and the motor is just following the pump. First thing to do is check for leaks in the pump, wand hose, gun etc. It may also be a blown water seal inside the pump.

you have a unloader or bypass valve on the machine & it sounds like that is sticking.
take out and lubricate

when at rest can you hear your machine start then stop every 1 or 2 seconds?

The problem sounds like its in the handle.. trigger mechinism